Patch "PCI: aardvark: Move to struct pci_host_bridge IRQ mapping functions" has been added to the 4.13-stable tree

Patch "PCI: aardvark: Move to struct pci_host_bridge IRQ mapping functions" has been added to the 4.13-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    PCI: aardvark: Move to struct pci_host_bridge IRQ mapping functions

to the 4.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pci-aardvark-move-to-struct-pci_host_bridge-irq-mapping-functions.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 407dae1e4415acde2d9f48bb76361893c4653756 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Mon, 9 Oct 2017 09:00:49 +0200
Subject: PCI: aardvark: Move to struct pci_host_bridge IRQ mapping functions

From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

commit 407dae1e4415acde2d9f48bb76361893c4653756 upstream.

struct pci_host_bridge gained hooks to map/swizzle IRQs, so that the IRQ
mapping can be done automatically by PCI core code through the
pci_assign_irq() function instead of resorting to arch-specific
implementation callbacks to carry out the same task which force PCI host
bridge drivers implementation to implement per-arch kludges to carry out a
task that is inherently architecture agnostic.

Commit 769b461fc0c0 ("arm64: PCI: Drop DT IRQ allocation from
pcibios_alloc_irq()") was assuming all PCI host controller drivers had been
converted to use ->map_irq(), but that wasn't the case: pci-aardvark had
not been converted. Due to this, it broke the support for legacy PCI
interrupts when using the pci-aardvark driver (used on Marvell Armada 3720
platforms).

In order to fix this, we make sure the ->map_irq and ->swizzle_irq fields
of pci_host_bridge are properly filled in.

Fixes: 769b461fc0c0 ("arm64: PCI: Drop DT IRQ allocation from pcibios_alloc_irq()")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/host/pci-aardvark.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -936,6 +936,8 @@ static int advk_pcie_probe(struct platfo
 	bridge->sysdata = pcie;
 	bridge->busnr = 0;
 	bridge->ops = &advk_pcie_ops;
+	bridge->map_irq = of_irq_parse_and_map_pci;
+	bridge->swizzle_irq = pci_common_swizzle;
 
 	ret = pci_scan_root_bus_bridge(bridge);
 	if (ret < 0) {


Patches currently in stable-queue which might be from thomas.petazzoni@free-electrons.com are

queue-4.13/pci-aardvark-move-to-struct-pci_host_bridge-irq-mapping-functions.patch